https://www.phoenixcontact.com/pi/products/2903671
Single relay - REL-IR4/LDP- 48DC/4X21AU - 2903671
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Plug-in industrial relay with power contacts and additional hard gold plating, 4 PDTs, test key, status LED,
freewheeling diode, mechanical switch position indicator, polarity: A1+, A2-, coil voltage: 48 V DC
Key Commercial Data
Packing unit
Minimum order quantity
GTIN
GTIN
4046356758840
10 pc
10 pc
Technical data
Dimensions
Width
Height
Depth
21.2 mm
27.5 mm
35.6 mm
Ambient conditions
Ambient temperature (operation)
Ambient temperature (storage/transport)
-40 °C ... 70 °C
-40 °C ... 85 °C
Coil side
Nominal input voltage U
N
Input voltage range in reference to U
N
Typical input current at U
N
Typical response time
Typical release time
Protective circuit
Status display
Power dissipation for nominal condition
48 V DC
see diagram
22 mA
13 ms
14 ms
Damping diode
Yellow LED
1.06 W
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https://www.phoenixcontact.com/pi/products/2903671
Single relay - REL-IR4/LDP- 48DC/4X21AU - 2903671
Technical data
Contact side
Contact type
Type of switch contact
Contact material
Note
Maximum switching voltage
Minimum switching voltage
Min. switching current
Maximum inrush current
Limiting continuous current
Interrupting rating (ohmic load) max.
Switching capacity min.
Motor load according to UL 508
4 PDTs
Single contact
AgNi, hard gold-plated
If the specified maximum values for multi-layer contact relays are
exceeded, the gold plating is destroyed. The maximum values of the
power contact relay are then valid. This can result in a shorter service
life than with a pure power contact.
30 V AC
36 V DC
2 V (At 24 mA)
2 mA (24 V DC)
50 mA
50 mA
1.2 W (at 24 V DC)
48 mW
1/3 HP, 240 V AC
Contact side (with destroyed gold layer)
Contact material
Note
Maximum switching voltage
Minimum switching voltage
Limiting continuous current
Maximum inrush current
Min. switching current
Interrupting rating (ohmic load) max.
AgNi
the following values are applicable if a gold layer is destroyed
250 V AC/DC
5 V (At 24 mA)
6A
16 A (20 ms, N/O contact)
5 mA (at 24 V)
144 W (at 24 V DC)
124 W (at 48 V DC)
108 W (at 60 V DC)
52 W (at 110 V DC)
48 W (at 220 V DC)
1500 VA (for 250 V AC)
Switching capacity in acc. with DIN VDE 0660/IEC 60947
2 A (at 24 V, DC13)
0.22 A (at 120 V, DC13)
0.11 A (at 250 V, DC13)
1.5 A (at 24 V, AC15)
1.5 A (at 120 V, AC15)
1 A (at 240 V, AC15)
General
Test voltage relay winding/relay contact
Test voltage PDT/PDT
Operating mode
Degree of protection
2.5 kV
rms
(50 Hz, 1 min.)
2 kV
rms
(50 Hz, 1 min.)
100% operating factor
RT I
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https://www.phoenixcontact.com/pi/products/2903671
Single relay - REL-IR4/LDP- 48DC/4X21AU - 2903671
Technical data
General
Mechanical service life
Mounting position
approx. 2x 10 cycles
any
7
Standards and Regulations
Connection in acc. with standard
Standards/regulations
Rated insulation voltage
Rated surge voltage
Insulation
Degree of pollution
Overvoltage category
CSA
IEC 60664
IEC 61810
250 V AC
2.5 kV
Basic insulation
2
II
Environmental Product Compliance
China RoHS
Environmentally Friendly Use Period = 50
For details about hazardous substances go to tab “Downloads”,
Category “Manufacturer's declaration”
Drawings
Diagram
20
Circuit diagram
Switching current [A]
10
6
4
2
1
11
A1
21
31
A2
41
14
24
34
44
12
22
32
42
0,5
0,3
0,2
0,1
10
20
30
50 70 100
200
Switching voltage [V]
300
AC, ohmic load
DC, ohmic load
Interrupting rating
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https://www.phoenixcontact.com/pi/products/2903671
Single relay - REL-IR4/LDP- 48DC/4X21AU - 2903671
Diagram
2,4
2,2
Coil voltage U/U
N
10
7
Diagram
1,8
1,6
1,4
1,2
1
0,8
0,6
Cycles
10
6
2
10
5
0
10
DC coils
AC coils
20
30
40
50
60
70
Ambient temperature [°C]
80
0
1
2
Switching capacity [kVA]
3
250 V AC, ohmic load
Operating voltage range
Electrical service life
Diagram
1
0,9
Reduction factor
0,8
0,7
0,6
0,5
0,4
0,3
1
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
COS
j
Service life reduction factor
Approvals
Approvals
Approvals
CSA / UL Recognized / cUL Recognized / VDE Zeichengenehmigung / EAC / cULus Recognized
Ex Approvals
Approval details
CSA
http://www.csagroup.org/services-industries/product-listing/
2554095
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https://www.phoenixcontact.com/pi/products/2903671
Single relay - REL-IR4/LDP- 48DC/4X21AU - 2903671
Approvals
UL Recognized
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm
FILE E 172140
cUL Recognized
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm
FILE E 172140
VDE Zeichengenehmigung
http://www2.vde.com/de/Institut/Online-Service/
VDE-gepruefteProdukte/Seiten/Online-Suche.aspx
40040427
EAC
RU C-
DE.A*30.B.01082
cULus Recognized
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm
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Tel. +49 5235 300
Fax +49 5235 3 41200
http://www.phoenixcontact.com
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